Yes, a number of times. Voters also approved accelerating the process.
I'm on the side of not letting people suffer and rot in a cell. Either we help them be functional adults who can contribute to society and course correct, or give a humane painless death once their crime is proven beyond doubt and that crime is deserving of a death penalty.
Letting people rot in a cell for life, sounds inhumane to me.
This should also be something a prisoner should be able to decide for their life. Not some politician to garner some more votes for their election.